21015722 is an even 8-digits composite number following 21015721
and preceding 21015723 . In scientific notation, it is written as 2.1015722 × 10^7.
The sum of its digits is 20. It has a total of 4 prime factors and 16 positive divisors.
There are 8313840 positive integers (up to 21015722) that are relatively prime to 21015722.
21015722 has 16 divisors, whose sum is 38798592
The reverse of 21015722 is 22751012
Previous prime number is 13
Is Prime? no
Number parity even
Number length 8
Sum of Digits 20
Digital Root 2
Name
twenty-one million fifteen thousand seven hundred twenty-two
Scientific notation
2.1015722 × 10^7
Engineering notation
2.1015722 × 10^6
Prime Factorization
2 × 7 × 13 × 115471
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21015722
Product of the distinct prime numbers
The prime factorization of 21015722 is 2 × 7 × 13 × 115471.
Since it has a total of 4 prime factors.
6 , 5 , 66 , 47 , 32 , 937 , 9788 , 7005 , 91691 , 67374 , 36969 , 272101 , 5709554 , 8635344 , 35740577 , 33753675 , 653314159 , 351860667 , 688385472 , 409702440
n×2
42031444
n×3
63047166
n×4
84062888
n×5
105078610
n÷2
10507861
n÷3
7005240.6666667
n÷3
5253930.5
n÷5
4203144.4
n2
441660571181284
n3
9.2818157823071E+21
n4
1.9506406013618E+29
n5
4.0994120600132E+36
2 √n
4584.2907848434
3 √n
275.96125094879
4 √n
67.707390917413
5 √n
29.141296050183
1 , 2 , 7 , 13 , 14 , 26 , 91 , 182 , 115471 , 230942 , 808297 , 1501123 , 1616594 , 3002246 , 10507861 , 21015722
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21015721
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21015722 can be divided by 16 positive divisors.
The sum of these divisors (counting 21015722) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010000001010110010101010
3
Ternary
1110112201011002
4
Quaternary
1100022302222
5
Quinary
20340000342
6
Senary
2030235002
8
Octal
120126252
10
Decimal
21015722
12
Duodecimal
7055a62
16
Hexadecimal
140acaa
20
Vigesimal
6b6j62
36
Base36
cifu2
md5
c7ad5500c7437cf7be6f3a2d27c7660b
sha1
896b44e25e4f022100979f88a6e2b1ac23e69551
sha256
0dfcfaa3b4193732feaff686daa7ed4e0b918281da2f4e3a34c56e1403e8cb43
sha512
cd8561d8b25bc5e563a56c40d43b9aaa0b71974ce441000ed0ee5fa514ffc001eaed9901174e3cac07ebdaa4f5ef010cc8cb577eed6cc2e492c60530eeac61ba
ripemd-160
31915d0846c044b4b5094203899e316ff105409d
Diameter
42031444
Circumference
132045675.69017
Area
1.3875176058034E+15
Volume
3.887957903156E+22
Surface area
5.5500704232136E+15
Circumference
132045675.69017
Perimeter
84062888
Area
441660571181284
Diagonal
29720719.075463
Surface area
2649963427087704
Volume
9.2818157823071E+21
Space diagonal
36400298.261743
Perimeter
63047166
Area
1.9124463724647E+14
Altitude
18200149.130872
Surface area
1.9124463724647E+14
Volume
1.0938724802323E+21
Height
9906906.3584875